American readers will no doubt be familiar with the long standing trade of the bail bond companies. Non-American readers may not be so familiar with the system, in which private companies post bail for defendants in return for a fee. It is a process which is not allowed in most other countries, but it seems that it is a highly effective system in ensuring that defendants appear for their trials.
I myself had no idea about the bail bond industry until I read this article about it in the New York Times. The American Bar Association hates the practice, it seems, and given the grip of lawyers in other legal systems, it is very unlikely that the practice will be emulated elsewhere. Which is a pity; some of these American innovations have a lot going for them.